KR100714458B1 - An instrument operate by using transformer equipment - Google Patents

Abstract

The present invention discloses a substation breaker.

The circuit breaker for substation equipment according to the present invention is provided inside the casing and selectively receives power to generate rotational force in the forward and reverse directions, a first bevel gear connected to the rotating shaft of the motor, and a second bevel gear engaged with it. Worm gear group consisting of a direction change gear group of the worm gear, a worm shaft axially supporting the second bevel gear on one side and an worm wheel interlocked with the worm wheel, and a stationary area provided at one side of the worm wheel at regular intervals. A shaft which is rotatably axially rotated with respect to the ratchet and the worm wheel, and which has a reverse and reverse latch groove for interlocking rotation by selectively locking and closing the ratchet respectively on one side, and a crank rotatably provided integrally at one end of the shaft; A tension spring having one end connected to the crank and the other end connected to the casing to exert an elastic force, and one side of the shaft A disc-shaped member that is axially coupled with a square fitting structure, and a joint having a protrusion formed on one side thereof, and a protrusion arranged coaxially on the shaft to engage with the protrusion of the joint on one side thereof so as to be interlocked with normal and reverse switching force due to rotation. One end is to protrude to the outside of the casing to the outer shaft is processed into a square, one end of the out shaft is connected to one end of the two-section link and the other end of the two-section link to be rotatable rotatable It is provided on the supporting bracket and consists of a forward and a limit limiting the rotation direction of the motor by selectively generating a signal by contacting when the two-section link is raised and lowered.

Since the breaker for substation equipment configured as described above transmits the driving force of the motor through a structure in which a plurality of gears are engaged, not only can the reliability of the operation be improved, but also the structure can be simplified and the miniaturization can be realized. There is an advantage that can be improved.

Substation, gas, breaker, switching

Description

Breaker for substation equipment {AN INSTRUMENT OPERATE BY USING TRANSFORMER EQUIPMENT}

1 is a view showing the configuration of a circuit breaker for substation equipment according to an embodiment of the present invention,

FIG. 2 is a cross-sectional view illustrating a line “A-A” of FIG. 1;

3 is a cross-sectional view showing the "B-B" line of FIG.

Figure 4 is a block diagram showing the main configuration of the worm wheel in the breaker for substation equipment of the present invention,

Figure 5 is a block diagram showing the main structure that is interlocked with the out shaft in the breaker for substation equipment of the present invention.

Figure 6 is a configuration diagram for explaining the operation state of the two-section link interlocked with the out shaft in the breaker for substation equipment of the present invention.

<Explanation of symbols for the main parts of the drawings>

1: motor 2: direction change gear

2a: 1st bevel gear 2b: 2nd bevel gear

3: worm gear group 3a: worm shaft

3b: Worm wheel 4: Forward and reverse ratchet

5: shaft 5a: forward and reverse ratchet groove

6: crank 7: tension spring

8: joint 9: out shaft

10: Verse 2 Link 11: Station Limit

c: casing b: bracket

The present invention relates to a breaker for substation equipment using the elasticity of the spring, and more particularly, it is possible to miniaturize using the spring as a source of operation force to increase the degree of freedom of design and to simplify the structure to increase the ease of maintenance The present invention relates to a circuit breaker that can be used.

In general, in order to minimize the power loss in the transmission process, high voltage is transmitted to the demand site, and the transmitted power must be transformed to an appropriate voltage before being supplied to the consumer. For this reason, transformers or substations should be installed in power demands, both downtown and suburban.

The transformer is an integrated device in which most elements are housed in a single cylinder as a device for directly delivering to a consumer by stepping down the power transmitted at a relatively low voltage to a level required by the consumer.

In contrast, the substation is a plant for supplying power to the consumer by forcing the power transmitted at a relatively high voltage in the transmission station through transformers, circuit breakers, and other devices. At this time, since the substation processes high-voltage power, the electric field formed around the line is very strong, and thus, the elements and the lines are sufficiently separated from each other in order to prevent arcing or mixing and maintain safety. It must be sufficiently insulated.

Generally, substations are classified into outdoor substations and indoor substations according to their installation location. In the suburbs where building density per unit area of land is low, the space occupancy cost is lower than the insulation cost, so a method of sufficiently separating the elements and lines is required. The installation of an outdoor substation, which is economically advantageous and therefore inexpensive and easy to install, exposes it on the open ground.

On the other hand, in the city with high building density per unit area of the land, the insulation cost is lower than the space occupancy cost, so it is economically advantageous to sufficiently insulate the elements and the lines, and accordingly Gas Insulated Switchgear: Install indoor substation of GIS).

The circuit breaker used to protect the electrical circuit of substation equipment in the high voltage system or higher class is the load switch part to cut off the load current or the fault current, the disconnecting part to cut from the line during the test or inspection, and the ground to ground the cut part. It is common to consist of a switch part.

In other words, Gas Insulated Switchgear (GIS) is the main component of substations (GCB, Gas Circuit Breaker), Disconnector (DS), Earthing Switch (ES), Lightning Arrester And a main bus (main bus) and the like, which are excellent in insulation performance and filled with inert SF 6 gas, thereby minimizing and minimizing the substation.

The breaker GCB of the gas insulated switchgear GIS is roughly classified into a hydraulic operation method and a spring operation method according to the operation method of the breaker.

First, the hydraulic pressure operation method has a merit that a large operating force can be obtained by using a fluid or gas as a working fluid, but it is not only difficult to operate, but also has a disadvantage of maintaining a stable airtightness of the air pressure. Therefore, there is a disadvantage that the performance is uneven.

In addition, the spring operation method uses elasticity as a blocking and input energy source, and has an advantage of maintaining the operating force and managing the operating device more easily than the hydraulic and pneumatic operation method using fluid and gas, but the structure is complicated and it is difficult to miniaturize. The difficulty of installation in a limited space and the degree of freedom of design are greatly limited, and in particular, the maintenance is very difficult.

The present invention has been made to solve the above problems, to provide a circuit breaker for substation equipment that can significantly increase the degree of freedom of design while minimizing the constraints on the installation space by enabling a compact size through a simple structure. There is this.

Another object of the present invention is to provide a breaker for substation equipment to ensure the reliability of operation to maintain a stable breaking performance.

Breaker for substation facility according to an embodiment of the present invention for realizing the above object is provided in the casing and receiving power to selectively generate the rotational force in the forward and reverse direction; A direction switching gear group comprising a first bevel gear connected to the rotating shaft of the motor and a second bevel gear engaged with it; A worm gear group comprising a worm shaft interlocked integrally by supporting the second bevel gear on one side and an worm wheel interlocked thereto; A shaft having a forward and reverse ratchet provided on one side of the worm wheel at a predetermined interval from each other, and a forward and reverse latch groove formed on the one side so as to be interlocked with the reverse and reverse ratchet selectively engaged on one side; A crank rotatably provided at one end of the shaft and a tension spring having one end connected to the crank and the other end connected to the casing to exert an elastic force; A joint having a protrusion formed on one side of a disc-shaped member axially coupled to one side of the shaft by a square fitting structure; An out shaft disposed coaxially with the shaft and providing a switching force due to rotation by interlocking with each other by forming a protrusion engaged with the protrusion of the joint, and having one end protruding out of the casing and being processed into a square; One end is connected to one side of the out shaft is provided on the two-section link and the bracket for rotatably supporting the other end of the two-link link to generate a signal by selectively contacting the lifting of the two-section link It characterized in that it comprises a forward and a reverse limit to determine the rotation direction of the motor.

In a preferred feature of the invention, the forward and reverse limits comprise circuitry for determining the direction of rotation at the next start of the motor through selective contact with the link.

The features and advantages of the present invention will become more apparent from the following detailed description based on the accompanying drawings. Prior to this, the terms or words used in the present specification and claims are consistent with the technical spirit of the present invention based on the principle that the inventor can appropriately define the concept of the term in order to explain the invention in the best way. It must be interpreted as meaning and concept.

Hereinafter, with reference to the accompanying drawings illustrating a preferred embodiment of the breaker for substation equipment according to the present invention.

1 is a view showing the configuration of a circuit breaker for a substation according to a preferred embodiment of the present invention, Figure 2 is a cross-sectional view showing the "AA" line of Figure 1, Figure 3 shows a "BB" line of Figure 1 It is a cross section.

And, Figure 4 is a block diagram showing the constitution of the main portion of the worm wheel in the breaker for substation equipment of the present invention, Figure 5 is a block diagram showing the constitution of the main part interlocked to the out shaft in the breaker for substation equipment of the present invention, Figure 6 Is a configuration diagram for explaining the operation state of the two-section link interlocked with the out shaft in the breaker for substation equipment of the present invention.

As shown therein, reference numeral 1 denotes a motor for selectively generating a forward or reverse rotational force according to an external power supply, and reference numeral 2 denotes a first bevel that rotates by being axially fitted to a rotation shaft of the motor 1. The direction change gear group which consists of the 2nd bevel gear 2b which engages with the gear 2a and this 1st bevel gear 2a, and changes direction at an approximately 90 degree angle, and receives a rotational force, is the reference number 3 The worm shaft (3a) and the worm wheel (3b) that is interlocked in the worm gear group (3) method to the worm shaft (3a) integrally interlocked by supporting the second bevel gear (2b) on one side and is transmitted to the worm shaft (3a) The worm gear group is shown.

In addition, reference numeral 4 denotes a forward and backward ratchet provided on one side of the worm wheel 3b constituting the above-described worm gear group 3 at regular intervals, and reference numeral 5 denotes the worm gear group 3. The shaft is rotatably fitted with respect to the worm wheel (3b) constituting the shaft is formed with a forward and reverse latch groove (5a) to the interlocking rotation by selectively engaging the forward and backward ratchet (4), respectively.

In addition, reference numeral 6 denotes a crank which is rotatably provided at one end of the shaft 5 so as to be integrally rotated, and reference numeral 7 is one end connected to the crank 6 and the other end of the casing (c). The tension spring (7) is connected to one side of the acting elastic force, and the reference numeral 8 is a disk-shaped member axially coupled to the square fitting structure on one side of the shaft (5) is a joint formed with a protrusion on one side It is shown.

Reference numeral 9 is arranged coaxially to the shaft 5, and on one side forms a protrusion that engages the protrusion of the joint 8 to provide a switching force by rotation in conjunction with this when rotating in the forward and reverse directions. The outer shaft protrudes out of the casing (c) is processed to form a square, reference number 10 is a one-sided link is connected to one end of the out shaft (9) is elevated by interlocking, reference numeral 11 is provided on the bracket (b) for rotatably supporting the other end of the two-section link (10) to generate a signal by selectively contacting when the two-section link (10) ascend the rotation direction of the motor (1) It shows the station limits that determine.

Although not shown, the forward limit 11 is preferably configured to include a circuit for determining the rotation direction at the next start of the motor 1 through selective contact with the link.

Each configuration as described above is built in a grounded casing (c) and isolated by sulfur hexafluoride (SF6) gas to eliminate the risk of electric shock and at the same time reduce the degradation or wear.

In addition, the configuration made as described above is completely separated and assembled for each unit (unit) is made to simplify the installation, it is preferable to be configured to be completely sealed by the outer frame so as not to be influenced by salt, dirt, weather and lightning strikes. Do.

Looking at the action of the breaker for substation equipment of the present invention configured as described above are as follows.

Referring to FIG. 1, when the motor 1 receives power from the outside to generate a one-way rotational force, the first bevel gear 2a and the first bevel gear 2a connected to the rotation shaft of the motor 1 may be used. ) And the second bevel gear (2b) engaged in rotation is to interlock.

Subsequently, the worm shaft 3a of the worm gear group 3 in which the second bevel gear 2b is pinched rotates integrally to rotate the worm wheel 3b in one direction.

At this time, as the worm wheel (3b) is rotated, the forward and backward ratchet (4) fixed to the worm wheel (3b) is rotated integrally, the forward and reverse ratchet (4) is a forward and backward ratchet groove formed on one side of the shaft ( It selectively locks to 5a) and transmits a rotational force, and as a result, the shaft 5 rotates, and the shaft 5 rotates to a position where the crank 6 reaches its peak.

On the other hand, as the shaft 5 rotates, the crank 6 fixed to the shaft 5 rotates in unison, and as the crank 6 rotates, the tension spring is stretched and extended. At this time, when the crank 6 rotates to reach a peak, the tension spring 7 that has been stretched rotates the shaft 5 by the force while making elastic return.

At the same time, the joint 8 fixed to the shaft 5 rotates integrally with the shaft 5, wherein the out shaft 9 is projected on the joint 8 as shown in FIG. 5. The rotation is achieved by interlocking by being provided with a structure to form and engage.

Here, the out shaft (9) is extended so that one side is exposed to the outside of the casing (c) and the end is processed into a square so that the end is connected to the substation equipment, although not shown to perform a switch action by rotation Will be. Since this configuration is carried out by known techniques, detailed configurations and descriptions are omitted.

Meanwhile, the two-segment link 10 connected to one side of the out shaft 9 is selectively contacted with the forward and reverse limit 11 as shown in FIGS. 3 and 6 by being provided in a vertically elevated structure. Done. Subsequently, the stationary limit 11 selectively generates a signal by contact with the two-section link 10, and based on the signal, the rotation direction of the motor 1 described above is determined at the next drive.

In this way, the operation of the bevel gear group and the worm gear group 3 by the shaft 5, the crank 6 and the two-section link 10 connected to the linkage is performed to rotate the outpost by a predetermined angle, so The reliability of the operation is ensured by simplifying the configuration.

On the other hand, the present invention is not limited to the described embodiments, it is apparent to those skilled in the art that various modifications and variations can be made without departing from the spirit and scope of the present invention. Therefore, such modifications or variations will have to belong to the claims of the present invention.

Since the breaker for substation facilities configured and operated as described above transmits the driving force of the motor through a structure in which a plurality of gears are engaged, not only can the reliability of the operation be increased, but also the structure can be simplified, thereby miniaturizing and slimming. In addition, there is an advantage to improve the maintainability.

In particular, the installation occupied space can be significantly reduced compared to the past, thereby minimizing space constraints and providing a useful effect of increasing design freedom.

Claims (2)

A motor provided inside the casing and receiving power to selectively generate rotational force in the forward and reverse directions; A direction switching gear group comprising a first bevel gear connected to the rotating shaft of the motor and a second bevel gear engaged with it; A worm gear group comprising a worm shaft interlocked integrally by supporting the second bevel gear on one side and an worm wheel interlocked thereto; A shaft having a forward and reverse ratchet provided on one side of the worm wheel at a predetermined interval from each other, and a forward and reverse latch groove formed on the one side so as to be interlocked with the reverse and reverse ratchet selectively engaged on one side; A crank rotatably provided at one end of the shaft and a tension spring having one end connected to the crank and the other end connected to the casing to exert an elastic force; A joint having a protrusion formed on one side of a disc-shaped member axially coupled to one side of the shaft by a square fitting structure; An out shaft disposed coaxially with the shaft and providing a switching force due to rotation by interlocking with each other by forming a protrusion engaged with the protrusion of the joint, and having one end protruding out of the casing and being processed into a square; One end is connected to one side of the out shaft is provided on the two-section link and the bracket for rotatably supporting the other end of the two-link link to generate a signal by selectively contacting the lifting of the two-section link Forward and reverse limits to determine the rotational direction of the motor; Breaker for substation equipment characterized in that comprises a. 2. The circuit breaker of claim 1, wherein the forward / lower limit comprises a circuit for determining a rotation direction at the next start of the motor through selective contact with the link.

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